The default entrypoint paths for the
chrome_sandbox_nacl_t domain are the following:

All executeables with the default executable label,
usually stored in /usr/bin and /usr/sbin.
/opt/google/chrome/nacl_helper_bootstrap,
/usr/lib/chromium-browser/nacl_helper_bootstrap

PROCESS TYPES SELinux defines process types (domains)
for each process running on the system

You can see the context of a process using the -Z option
to ps

Policy governs the access confined processes have to
files. SELinux chrome_sandbox_nacl policy is very flexible
allowing users to setup their chrome_sandbox_nacl processes
in as secure a method as possible.

The following process types are defined for
chrome_sandbox_nacl:

chrome_sandbox_nacl_t

Note: semanage permissive -a chrome_sandbox_nacl_t can
be used to make the process type chrome_sandbox_nacl_t
permissive. SELinux does not deny access to permissive
process types, but the AVC (SELinux denials) messages are
still generated.

BOOLEANS SELinux policy is customizable based on least
access required. chrome_sandbox_nacl policy is extremely
flexible and has several booleans that allow you to
manipulate the policy and run chrome_sand- box_nacl with the
tightest access possible.

If you want to allow all domains to use other domains
file descriptors, you must turn on the allow_domain_fd_use
boolean. Enabled by default.

setsebool -P allow_domain_fd_use 1

If you want to allow sysadm to debug or ptrace all
processes, you must turn on the allow_ptrace boolean.
Disabled by default.

setsebool -P allow_ptrace 1

If you want to allow all domains to have the kernel load
modules, you must turn on the domain_kernel_load_modules
boolean. Disabled by default.

setsebool -P domain_kernel_load_modules 1

If you want to allow all domains to execute in
fips_mode, you must turn on the fips_mode boolean. Enabled
by default.

setsebool -P fips_mode 1

If you want to enable reading of urandom for all
domains, you must turn on the global_ssp boolean. Disabled
by default.

setsebool -P global_ssp 1

MANAGED FILES The SELinux process type
chrome_sandbox_nacl_t can manage files labeled with the
following file types. The paths listed are the default paths
for these file types. Note the processes UID still need to
have DAC permissions.

FILE CONTEXTS SELinux requires files to have an extended
attribute to define the file type.

You can see the context of a file using the -Z option to
ls

Policy governs the access confined processes have to
these files. SELinux chrome_sandbox_nacl policy is very
flexible allowing users to setup their chrome_sandbox_nacl
processes in as secure a method as pos- sible.

The following file types are defined for
chrome_sandbox_nacl:

chrome_sandbox_nacl_exec_t

- Set files with the chrome_sandbox_nacl_exec_t type, if
you want to transition an executable to the
chrome_sandbox_nacl_t domain.

Note: File context can be temporarily modified with the
chcon command. If you want to permanently change the file
context you need to use the semanage fcontext command. This
will modify the SELinux labeling database. You will need to
use restorecon to apply the labels.

COMMANDS semanage fcontext can also be used to
manipulate default file context mappings.

semanage permissive can also be used to manipulate
whether or not a process type is permissive.

semanage module can also be used to
enable/disable/install/remove pol- icy modules.

semanage boolean can also be used to manipulate the
booleans

system-config-selinux is a GUI tool available to
customize SELinux pol- icy settings.